Tata Sky — refusal to close my acct

Address:

Mumbai City, Maharashtra

i pay my tata sky subscription in advance, i did so in may this year, but due to some technical problems i stopped getting the service some time in mid june & i contacted tata sky to close my acct, they informed me tht they will b calling me back within 24hrs to close my acct, since then ive called them numerous times requesting them to close my acct & now its been over a month since my first contact, i still dont get their services & neither have they closed my acct & nor have i got my refund of advance payment ₹2000 approx., their sales team still dares to contact me regularly to sell me something o the other, but no1 addresses the issue tht i want to close my acct